<template>
  <div class="goods-comment" v-if="commentInfo">
    <div class="head">
      <div class="data">
        <p>
          <span>{{ commentInfo.salesCount }}</span>
          <span>人购买</span>
        </p>
        <p>
          <span>{{ commentInfo.praisePercent }}</span>
          <span>好评率</span>
        </p>
      </div>
      <div class="tags">
        <div class="dt">大家都在说：</div>
        <div class="dd">
          <a
            href="javascript:;"
            :class="{ active: i === activeIndex }"
            v-for="(tag, i) in commentInfo.tags"
            :key="i"
            @click="changeTag(i)"
          >{{ tag.title }}（{{ tag.tagCount }}）</a>
        </div>
      </div>
    </div>
    <div class="sort">
      <span>排序：</span>
      <a
        href="javascript:;"
        :class="{ active: reqParams.sortField == null }"
        @click="changeSort(null)"
      >默认</a>
      <a
        href="javascript:;"
        :class="{ active: reqParams.sortField == 'praiseCount' }"
        @click="changeSort('praiseCount')"
      >最热</a>
      <a
        href="javascript:;"
        :class="{ active: reqParams.sortField == 'createTime' }"
        @click="changeSort('createTime')"
      >最新</a>
    </div>

    <!-- 列表 -->
    <div class="list">
      <div class="item" v-for="item in commentList" :key="item.id">
        <div class="user">
          <img :src="item.member.avatar" alt />
          <span>{{ formatNickname(item.member.nickname) }}</span>
        </div>
        <div class="body">
          <div class="score">
            <i v-for="i in item.score" :key="i + '1'" class="iconfont icon-wjx01"></i>
            <i v-for="i in 5 - item.score" :key="i + '2'" class="iconfont icon-wjx02"></i>
            <span class="attr">{{ formatSpecs(item.orderInfo.specs) }}</span>
          </div>
          <div class="text">{{ item.content }}</div>
          <GoodsCommentImage v-if="item.pictures.length" :pictures="item.pictures" />
          <div class="time">
            <span>{{ item.createTime }}</span>
            <span class="zan">
              <i class="iconfont icon-dianzan"></i>
              {{ item.praiseCount }}
            </span>
          </div>
        </div>
      </div>
    </div>

    <Pagination
      :Total="total"
      :pageSize="reqParams.pageSize"
      :CurrentPage="reqParams.page"
      @current-change="changePager"
    />
  </div>
</template>
<script>
import { findCommentInfoByGoods, findCommentList } from "@/api/goods"
import { inject, ref, reactive, watch } from "vue"
import GoodsCommentImage from "./goods-comment-image.vue"

// 获取评论信息
const commentInfo = ref(null)
const getCommentInfo = (goods) => {
  findCommentInfoByGoods(goods.id).then(({ result }) => {
    result.tags.unshift({ title: "有图", tagCount: result.hasPictureCount, type: 'img' })
    result.tags.unshift({ title: "全部评价", tagCount: result.evaluateCount, type: 'all' })
    commentInfo.value = result
    return result
  })
}

// 定义转换数据的函数（对应vue2.0的过滤器）
const formatSpecs = (specs) => {
  return specs.reduce((p, c) => `${p} ${c.name}：${c.nameValue}`, '').trim()
}
const formatNickname = (nickname) => {
  return nickname.substr(0, 1) + '****' + nickname.substr(-1)
}


export default {
  name: "GoodsComment",
  setup(props) {
    const goods = inject("goods");
    const total = ref(0)
    // 筛选条件准备
    const reqParams = reactive({
      page: 1,
      pageSize: 10,
      hasPicture: null,
      tag: null,
      sortField: null
    });
    getCommentInfo(goods);
    /* tags的激活索引 */
    const activeIndex = ref(0);
    const changeTag = index => {
      activeIndex.value = index;
      // 设置有图和标签条件
      const currentTag = commentInfo.value.tags[index];
      if (currentTag.type === "all") {
        reqParams.tag = null;
      }
      else if (currentTag.type === "img") {
        reqParams.hasPicture = true;
        reqParams.tag = null;
      }
      else {
        reqParams.tag = currentTag.title;
      }
      reqParams.page = 1;
    };
    // 选择排序方式
    const changeSort = (type) => {
      reqParams.sortField = type;
      reqParams.page = 1;
    };
    // 初始化或者筛选条件改变后，获取列表数据。
    const commentList = ref([]);
    watch(reqParams, async (newVal) => {
      try {
        const { result } = await findCommentList(goods.id, reqParams);
        console.log(result);
        commentList.value = result.items;
        total.value = result.counts
      }
      catch (error) {
        console.log("findCommentList:", error);
      }
    }, { immediate: true });
    const changePager = (np) => {
      reqParams.page = np
    }

    return {
      commentInfo,
      changeTag,
      activeIndex,
      changeSort,
      commentList,
      formatSpecs,
      reqParams,
      formatNickname,
      total,
      changePager
    };
  },
  components: { GoodsCommentImage }
}


</script>


<style scoped lang="less">
.goods-comment {
  .head {
    display: flex;
    padding: 30px 0;
    .data {
      width: 340px;
      display: flex;
      padding: 20px;
      p {
        flex: 1;
        text-align: center;
        span {
          display: block;
          &:first-child {
            font-size: 32px;
            color: @priceColor;
          }
          &:last-child {
            color: #999;
          }
        }
      }
    }
    .tags {
      flex: 1;
      display: flex;
      border-left: 1px solid #f5f5f5;
      .dt {
        font-weight: bold;
        width: 100px;
        text-align: right;
        line-height: 42px;
      }
      .dd {
        flex: 1;
        display: flex;
        flex-wrap: wrap;
        > a {
          width: 132px;
          height: 42px;
          margin-left: 20px;
          margin-bottom: 20px;
          border-radius: 4px;
          border: 1px solid #e4e4e4;
          background: #f5f5f5;
          color: #999;
          text-align: center;
          line-height: 40px;
          &:hover {
            border-color: @xtxColor;
            background: lighten(@xtxColor, 50%);
            color: @xtxColor;
          }
          &.active {
            border-color: @xtxColor;
            background: @xtxColor;
            color: #fff;
          }
        }
      }
    }
  }
  .sort {
    height: 60px;
    line-height: 60px;
    border-top: 1px solid #f5f5f5;
    border-bottom: 1px solid #f5f5f5;
    margin: 0 20px;
    color: #666;
    > span {
      margin-left: 20px;
    }
    > a {
      margin-left: 30px;
      &.active,
      &:hover {
        color: @xtxColor;
      }
    }
  }

  .list {
    padding: 0 20px;
    .item {
      display: flex;
      padding: 25px 10px;
      border-bottom: 1px solid #f5f5f5;
      .user {
        width: 160px;
        img {
          width: 40px;
          height: 40px;
          border-radius: 50%;
          overflow: hidden;
        }
        span {
          padding-left: 10px;
          color: #666;
        }
      }
      .body {
        flex: 1;
        .score {
          line-height: 40px;
          .iconfont {
            color: #ff9240;
            padding-right: 3px;
          }
          .attr {
            padding-left: 10px;
            color: #666;
          }
        }
      }
      .text {
        color: #666;
        line-height: 24px;
      }
      .time {
        color: #999;
        display: flex;
        justify-content: space-between;
        margin-top: 5px;
      }
    }
  }
}
</style>